Universal serial bus



FIG. 1 is a perspective view thereof;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plane view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top plane view thereof;

FIG. 8 is also a perspective view thereof;

FIG. 9 is a front elevational view thereof with the cap detached; and,

FIG. 10 is also a perspective view thereof with the cap detached. 

The ornamental design for a universal serial bus, as shown and described. 